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Last week, one of the Palmer’s team in Bethlehem told me it would be OK to add spraying oil to every spray I use – whether it be an insecticide or a pesticide, as it is good preventative measure. I have a bottle of Yates Conqueror Spraying Oil and the directions include a range of plants but do not mention tomatoes, potatoes, curcubits or any vegetable for that matter. Naturally, I am now wondering if the advice I got last week is correct or if we were talking about different products. In the meantime, my neighbour insists that spraying oil is the same as a wetting agent [e.g. Sprayfix] or a dish washing detergent that lots of people use instead of a wetting agent. Again, I am wondering who is correct? Thanks

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Hi Carol, Yes correct in all aspects. Obviously, there are different “grades” of oil (enspray oil is the best, then conqueror oil down to the dish washing detergent (plain), and all act as a wetting agent. Please note that some plants can not be sprayed with a wetting agent (ie Ferns, some succulents, if in doubt always do a test on a small part of the plant, foliage might burn. Enspray oil and conqueror oil act as a preventative to insect and fungal diseases, (detergent doesn’t).

Thanks the Palmers Team

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